Nonglare electric lamp for headlights



Deb. 18, 1928. 1,695,464

R. P. MCCURDY ET AL NONGLARE ELECTRIC LAMP FOR HEADLIGHTS Filed May 23,1924 Fig.2

W d/d' 951, A)? MW Patented Dec. 18, 1928.

UNITED STATES.

PATENT OFFICE.

ROBERT P. MCCURDY, O1 PITTSBURGH, PENNSYLVANIA, AND FREDERICK W. HOCH- jSTETTER, F DAYTON, OHIO, ASSIGNOBS, BY MESNE ASSIGNMENTS, T0 SAIDHOCHSTETTEB.

NONGLARE ELECTRIC LAMP FOR; HEADLIGHTS.

Application filed May 23,

The object of this invention is to provide an electric filament bulblamp with an interior shield or light-filter which will prevent theprojection of blinding rays into the eyes of a person positioned infront of the headlight in which the bulb is placed, and the specialobject of the invention is to so construct the nonglare shield that itshall be enclosed within the lamp-globe, where it will be out of the wayand will be protected from breaking in handling, as more fullyhereinafter set forth.

In the drawing- Fig. 1 is a front view of our improved lamp;

Fig. 2 is a side elevation thereof;

Figs. 3 and 4 are similar views showing a modified arrangement of thescreen or shield.

Referring to Figs, 1 and 2, the shield 5 is shown as being made of glassformed integral 0 with the usual filament-base 6. The shield is moldedon the base at the same time the filament is molded or cast therein. Theshield is supported on a laterally-extending offset 7, and it lies in avertical position in front of 2 the filament. The shield is tinted torender it ray-filtering. The shield has sufficient dimensions to coverthe filament when the'same is viewed from a point in front of the head.-light. The shield must, of course, be suf- 1924. Serial No. 715,406..

'mented in a recess in the lateral offset 7. This shield is shownas'being constructed of a very fine wire mesh, sometimes referred to asa mosaic screen. This fine wire mesh produces approximately the sametranslucent effect of etched ,or tinted glass, and therefore serves {.0filter out 'orblock off the blinding rays of ight.

What we claim as new is: I

An electric filament lamp for use in headlights having the usual centralfilament projecting from the filament-base, and a light-filterinnon-glare shield composed of a piece of ray ltering material supportedon a forwardly-projecting offset from the top of said filament-base infront of said filament, for the purpose set forth. 7

In testimony whereof we hereunto afiix our signatures this 22nd day ofMay, 1924.

ROBERT P. McCURDY. FREDERICK W. HOCHSTETTER.

